<p>The technique of Nanoindentation <em>in situ</em> Transmission Electron Microscope has been implemented on a Philips CM20. Indentations have been performed on Si and Sapphire (<em>α-Al</em><em>2</em><em>O</em><em>3</em>) cut from wafers; Cr/Sc multilayers and <em>Ti</em><em>3</em><em>SiC</em><em>2</em> thin films. Different sample geometries and preparation methods have been evaluated. Both conventional ion and Focused Ion Beam milling were used, with different ways of protecting the sample during milling. Observations were made of bending and fracture of samples, dislocation nucleation and dislocation movement. Basal slip was observed upon unloading in Sapphire. Dislocation movement constricted along the basal planes were observed in <em>Ti</em><em>3</em><em>SiC</em><em>2</em>. Post indentation electron microscopy revealed kink formation in <em>Ti</em><em>3</em><em>SiC</em><em>2</em> and layer rotation and slip across layers in Cr/Sc multilayer stacks. Limitations of the technique are presented and discussed.</p>
| Identifer | oai:union.ndltd.org:UPSALLA/oai:DiVA.org:liu-8333 |
| Date | January 2007 |
| Creators | Johnson, Lars |
| Publisher | Linköping University, Department of Physics, Chemistry and Biology, Institutionen för fysik, kemi och biologi |
| Source Sets | DiVA Archive at Upsalla University |
| Language | English |
| Detected Language | English |
| Type | Student thesis, text |
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